Remember that fish and other types of sea creatures are the only ones who have gills and can breathe underwater. All of the creatures who have lungs (like dogs, cats, birds, bears, boars, bunnies, and -- of course -- you!) cannot breathe underwater and should always be very careful in pools, baths, or other places to make sure not to stay under the surface for too long without coming up for a nice, refreshing breath of air!
Under the seaHave you ever noticed that some creatures who live in water rely on getting their oxygen from the air instead of from water? A good example of an animal like this would be the dolphin! The reason why dolphins need to get their oxygen from the air is that, like humans and other mammals, they have lungs for breathing instead of gills.Can you think of any other aquatic animals like the dolphin who have lungs and breathe air??
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